What is two minus parentheses eight -5×6 parentheses?

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18